2 * Hauppauge HD PVR USB driver
4 * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
5 * Copyright (C) 2008 Janne Grunau (j@jannau.net)
6 * Copyright (C) 2008 John Poet
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation, version 2.
14 #include <linux/kernel.h>
15 #include <linux/errno.h>
16 #include <linux/init.h>
17 #include <linux/slab.h>
18 #include <linux/module.h>
19 #include <linux/uaccess.h>
20 #include <linux/atomic.h>
21 #include <linux/usb.h>
22 #include <linux/mutex.h>
23 #include <linux/i2c.h>
25 #include <linux/videodev2.h>
26 #include <media/v4l2-dev.h>
27 #include <media/v4l2-common.h>
31 static int video_nr[HDPVR_MAX] = {[0 ... (HDPVR_MAX - 1)] = UNSET};
32 module_param_array(video_nr, int, NULL, 0);
33 MODULE_PARM_DESC(video_nr, "video device number (-1=Auto)");
35 /* holds the number of currently registered devices */
36 static atomic_t dev_nr = ATOMIC_INIT(-1);
39 module_param(hdpvr_debug, int, S_IRUGO|S_IWUSR);
40 MODULE_PARM_DESC(hdpvr_debug, "enable debugging output");
42 static uint default_video_input = HDPVR_VIDEO_INPUTS;
43 module_param(default_video_input, uint, S_IRUGO|S_IWUSR);
44 MODULE_PARM_DESC(default_video_input, "default video input: 0=Component / 1=S-Video / 2=Composite");
46 static uint default_audio_input = HDPVR_AUDIO_INPUTS;
47 module_param(default_audio_input, uint, S_IRUGO|S_IWUSR);
48 MODULE_PARM_DESC(default_audio_input, "default audio input: 0=RCA back / 1=RCA front / 2=S/PDIF");
50 static bool boost_audio;
51 module_param(boost_audio, bool, S_IRUGO|S_IWUSR);
52 MODULE_PARM_DESC(boost_audio, "boost the audio signal");
55 /* table of devices that work with this driver */
56 static const struct usb_device_id hdpvr_table[] = {
57 { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID) },
58 { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID1) },
59 { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID2) },
60 { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID3) },
61 { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID4) },
62 { } /* Terminating entry */
64 MODULE_DEVICE_TABLE(usb, hdpvr_table);
67 void hdpvr_delete(struct hdpvr_device *dev)
69 hdpvr_free_buffers(dev);
70 usb_put_dev(dev->udev);
73 static void challenge(u8 *bytes)
79 for (idx = 0; idx < 32; ++idx) {
82 bytes[(idx >> 3) + 3] = bytes[(idx >> 2) & 0x3];
86 bytes[2] += bytes[3] * 4 + bytes[4] + bytes[5];
87 bytes[4] += bytes[(idx & 0x1) * 2] * 9 + 9;
91 bytes[0] += 7*idx + 4;
92 bytes[6] += bytes[3] * 3;
95 bytes[3 - (idx >> 3)] = bytes[idx >> 2];
96 bytes[5] += bytes[6] * 3;
97 for (i = 0; i < 3; i++)
98 bytes[3] *= bytes[3] + 1;
101 for (i = 0; i < 3; i++)
102 bytes[1] *= bytes[6] + 1;
103 for (i = 0; i < 3; i++) {
104 i64P = (__le64 *)bytes;
105 tmp64 = le64_to_cpup(i64P);
106 tmp64 = tmp64 + (tmp64 << (bytes[7] & 0x0f));
107 *i64P = cpu_to_le64(tmp64);
114 /* try to init the device like the windows driver */
115 static int device_authorization(struct hdpvr_device *dev)
118 int ret, retval = -ENOMEM;
119 char request_type = 0x38, rcv_request = 0x81;
122 mutex_lock(&dev->usbc_mutex);
123 ret = usb_control_msg(dev->udev,
124 usb_rcvctrlpipe(dev->udev, 0),
125 rcv_request, 0x80 | request_type,
130 v4l2_err(&dev->v4l2_dev,
131 "unexpected answer of status request, len %d\n", ret);
136 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
137 "Status request returned, len %d: %46ph\n",
142 dev->fw_ver = dev->usbc_buf[1];
144 dev->usbc_buf[46] = '\0';
145 v4l2_info(&dev->v4l2_dev, "firmware version 0x%x dated %s\n",
146 dev->fw_ver, &dev->usbc_buf[2]);
148 if (dev->fw_ver > 0x15) {
149 dev->options.brightness = 0x80;
150 dev->options.contrast = 0x40;
151 dev->options.hue = 0xf;
152 dev->options.saturation = 0x40;
153 dev->options.sharpness = 0x80;
156 switch (dev->fw_ver) {
157 case HDPVR_FIRMWARE_VERSION:
158 dev->flags &= ~HDPVR_FLAG_AC3_CAP;
160 case HDPVR_FIRMWARE_VERSION_AC3:
161 case HDPVR_FIRMWARE_VERSION_0X12:
162 case HDPVR_FIRMWARE_VERSION_0X15:
163 case HDPVR_FIRMWARE_VERSION_0X1E:
164 dev->flags |= HDPVR_FLAG_AC3_CAP;
167 v4l2_info(&dev->v4l2_dev, "untested firmware, the driver might not work.\n");
168 if (dev->fw_ver >= HDPVR_FIRMWARE_VERSION_AC3)
169 dev->flags |= HDPVR_FLAG_AC3_CAP;
171 dev->flags &= ~HDPVR_FLAG_AC3_CAP;
174 response = dev->usbc_buf+38;
176 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "challenge: %8ph\n",
181 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, " response: %8ph\n",
186 ret = usb_control_msg(dev->udev,
187 usb_sndctrlpipe(dev->udev, 0),
188 0xd1, 0x00 | request_type,
192 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
193 "magic request returned %d\n", ret);
197 mutex_unlock(&dev->usbc_mutex);
201 static int hdpvr_device_init(struct hdpvr_device *dev)
206 if (device_authorization(dev))
209 /* default options for init */
210 hdpvr_set_options(dev);
212 /* set filter options */
213 mutex_lock(&dev->usbc_mutex);
215 buf[0] = 0x03; buf[1] = 0x03; buf[2] = 0x00; buf[3] = 0x00;
216 ret = usb_control_msg(dev->udev,
217 usb_sndctrlpipe(dev->udev, 0),
219 CTRL_LOW_PASS_FILTER_VALUE, CTRL_DEFAULT_INDEX,
222 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
223 "control request returned %d\n", ret);
224 mutex_unlock(&dev->usbc_mutex);
226 /* enable fan and bling leds */
227 mutex_lock(&dev->usbc_mutex);
229 ret = usb_control_msg(dev->udev,
230 usb_sndctrlpipe(dev->udev, 0),
231 0xd4, 0x38, 0, 0, buf, 1,
233 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
234 "control request returned %d\n", ret);
236 /* boost analog audio */
237 buf[0] = boost_audio;
238 ret = usb_control_msg(dev->udev,
239 usb_sndctrlpipe(dev->udev, 0),
240 0xd5, 0x38, 0, 0, buf, 1,
242 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
243 "control request returned %d\n", ret);
244 mutex_unlock(&dev->usbc_mutex);
246 dev->status = STATUS_IDLE;
250 static const struct hdpvr_options hdpvr_default_options = {
251 .video_std = HDPVR_60HZ,
252 .video_input = HDPVR_COMPONENT,
253 .audio_input = HDPVR_RCA_BACK,
254 .bitrate = 65, /* 6 mbps */
255 .peak_bitrate = 90, /* 9 mbps */
256 .bitrate_mode = HDPVR_CONSTANT,
257 .gop_mode = HDPVR_SIMPLE_IDR_GOP,
258 .audio_codec = V4L2_MPEG_AUDIO_ENCODING_AAC,
259 /* original picture controls for firmware version <= 0x15 */
260 /* updated in device_authorization() for newer firmware */
268 static int hdpvr_probe(struct usb_interface *interface,
269 const struct usb_device_id *id)
271 struct hdpvr_device *dev;
272 struct usb_host_interface *iface_desc;
273 struct usb_endpoint_descriptor *endpoint;
274 #if IS_ENABLED(CONFIG_I2C)
275 struct i2c_client *client;
280 int retval = -ENOMEM;
282 /* allocate memory for our device state and initialize it */
283 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
285 dev_err(&interface->dev, "Out of memory\n");
289 /* init video transfer queues first of all */
290 /* to prevent oops in hdpvr_delete() on error paths */
291 INIT_LIST_HEAD(&dev->free_buff_list);
292 INIT_LIST_HEAD(&dev->rec_buff_list);
294 /* register v4l2_device early so it can be used for printks */
295 if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) {
296 dev_err(&interface->dev, "v4l2_device_register failed\n");
300 mutex_init(&dev->io_mutex);
301 mutex_init(&dev->i2c_mutex);
302 mutex_init(&dev->usbc_mutex);
303 dev->usbc_buf = kmalloc(64, GFP_KERNEL);
304 if (!dev->usbc_buf) {
305 v4l2_err(&dev->v4l2_dev, "Out of memory\n");
306 goto error_v4l2_unregister;
309 init_waitqueue_head(&dev->wait_buffer);
310 init_waitqueue_head(&dev->wait_data);
312 dev->options = hdpvr_default_options;
314 if (default_video_input < HDPVR_VIDEO_INPUTS)
315 dev->options.video_input = default_video_input;
317 if (default_audio_input < HDPVR_AUDIO_INPUTS) {
318 dev->options.audio_input = default_audio_input;
319 if (default_audio_input == HDPVR_SPDIF)
320 dev->options.audio_codec =
321 V4L2_MPEG_AUDIO_ENCODING_AC3;
324 dev->udev = usb_get_dev(interface_to_usbdev(interface));
326 /* set up the endpoint information */
327 /* use only the first bulk-in and bulk-out endpoints */
328 iface_desc = interface->cur_altsetting;
329 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
330 endpoint = &iface_desc->endpoint[i].desc;
332 if (!dev->bulk_in_endpointAddr &&
333 usb_endpoint_is_bulk_in(endpoint)) {
334 /* USB interface description is buggy, reported max
335 * packet size is 512 bytes, windows driver uses 8192 */
337 dev->bulk_in_size = buffer_size;
338 dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
342 if (!dev->bulk_in_endpointAddr) {
343 v4l2_err(&dev->v4l2_dev, "Could not find bulk-in endpoint\n");
347 /* init the device */
348 if (hdpvr_device_init(dev)) {
349 v4l2_err(&dev->v4l2_dev, "device init failed\n");
353 mutex_lock(&dev->io_mutex);
354 if (hdpvr_alloc_buffers(dev, NUM_BUFFERS)) {
355 mutex_unlock(&dev->io_mutex);
356 v4l2_err(&dev->v4l2_dev,
357 "allocating transfer buffers failed\n");
360 mutex_unlock(&dev->io_mutex);
362 #if IS_ENABLED(CONFIG_I2C)
363 retval = hdpvr_register_i2c_adapter(dev);
365 v4l2_err(&dev->v4l2_dev, "i2c adapter register failed\n");
366 goto error_free_buffers;
369 client = hdpvr_register_ir_rx_i2c(dev);
371 v4l2_err(&dev->v4l2_dev, "i2c IR RX device register failed\n");
376 client = hdpvr_register_ir_tx_i2c(dev);
378 v4l2_err(&dev->v4l2_dev, "i2c IR TX device register failed\n");
384 dev_num = atomic_inc_return(&dev_nr);
385 if (dev_num >= HDPVR_MAX) {
386 v4l2_err(&dev->v4l2_dev,
387 "max device number reached, device register failed\n");
393 retval = hdpvr_register_videodev(dev, &interface->dev,
396 v4l2_err(&dev->v4l2_dev, "registering videodev failed\n");
400 /* let the user know what node this device is now attached to */
401 v4l2_info(&dev->v4l2_dev, "device now attached to %s\n",
402 video_device_node_name(&dev->video_dev));
406 #if IS_ENABLED(CONFIG_I2C)
407 i2c_del_adapter(&dev->i2c_adapter);
410 hdpvr_free_buffers(dev);
412 usb_put_dev(dev->udev);
413 kfree(dev->usbc_buf);
414 error_v4l2_unregister:
415 v4l2_device_unregister(&dev->v4l2_dev);
422 static void hdpvr_disconnect(struct usb_interface *interface)
424 struct hdpvr_device *dev = to_hdpvr_dev(usb_get_intfdata(interface));
426 v4l2_info(&dev->v4l2_dev, "device %s disconnected\n",
427 video_device_node_name(&dev->video_dev));
428 /* prevent more I/O from starting and stop any ongoing */
429 mutex_lock(&dev->io_mutex);
430 dev->status = STATUS_DISCONNECTED;
431 wake_up_interruptible(&dev->wait_data);
432 wake_up_interruptible(&dev->wait_buffer);
433 mutex_unlock(&dev->io_mutex);
434 v4l2_device_disconnect(&dev->v4l2_dev);
436 flush_work(&dev->worker);
437 mutex_lock(&dev->io_mutex);
438 hdpvr_cancel_queue(dev);
439 mutex_unlock(&dev->io_mutex);
440 #if IS_ENABLED(CONFIG_I2C)
441 i2c_del_adapter(&dev->i2c_adapter);
443 video_unregister_device(&dev->video_dev);
448 static struct usb_driver hdpvr_usb_driver = {
450 .probe = hdpvr_probe,
451 .disconnect = hdpvr_disconnect,
452 .id_table = hdpvr_table,
455 module_usb_driver(hdpvr_usb_driver);
457 MODULE_LICENSE("GPL");
458 MODULE_VERSION("0.2.1");
459 MODULE_AUTHOR("Janne Grunau");
460 MODULE_DESCRIPTION("Hauppauge HD PVR driver");